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CVE-2026-75604— Next.js: Unauthenticated Remote Code Execution on windows-hosted servers

Quick assessment

Affected
vercel next.js
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Vercel Next.js是Vercel公司开源的一个支持服务端渲染与静态生成的Web应用框架。 Vercel Next.js 13.4.0版本至15.5.24之前版本和16.0.0版本至16.3.3之前版本存在路径遍历漏洞，该漏洞源于在Windows服务器上构建增量缓存路径时未正确转义路由段中的反斜杠（涉及escape-path-delimiters.ts和file-system-cache.ts文件），导致远程请求可通过编码的Windows路径分隔符遍历到预期缓存根目录之外，暴露私有构建数据（包括服

CVSS 9.0 · Critical EPSS 2.10% · P82

Public Exploits 1

Metasploit · 1 nextjs_unauth_rce_cve_2026_75604.rb [exploit]

Affected Version Matrix 2

VendorProduct Version RangeStatus
vercel next.js >= 13.4.0, < 15.5.24 affected
>= 16.0.0, < 16.3.3 affected
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I. Basic Information for CVE-2026-75604

Vulnerability Information
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Vulnerability Title
Next.js: Unauthenticated Remote Code Execution on windows-hosted servers
Source: CVE Program / CVE List V5
Vulnerability Description
Next.js is a React framework for building full-stack web applications. From 13.4.0 until 15.5.24 and 16.3.3, Next.js applications using Pages Router or App Router without Cache Components on Windows-hosted servers do not consistently escape backslashes in route segments before constructing incremental-cache paths. In packages/next/src/shared/lib/router/utils/escape-path-delimiters.ts and packages/next/src/server/lib/incremental-cache/file-system-cache.ts, a remote request can supply encoded Windows path separators that traverse outside the intended cache root and expose private build data, including the server-reference-manifest encryption key. Disclosure of that key can enable remote code execution in the affected application. This issue is fixed in versions 15.5.24 and 16.3.3.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
对路径名的限制不恰当(路径遍历)
Source: CVE Program / CVE List V5
Vulnerability Title
Vercel Next.js 路径遍历漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Vercel Next.js是Vercel公司开源的一个支持服务端渲染与静态生成的Web应用框架。 Vercel Next.js 13.4.0版本至15.5.24之前版本和16.0.0版本至16.3.3之前版本存在路径遍历漏洞，该漏洞源于在Windows服务器上构建增量缓存路径时未正确转义路由段中的反斜杠（涉及escape-path-delimiters.ts和file-system-cache.ts文件），导致远程请求可通过编码的Windows路径分隔符遍历到预期缓存根目录之外，暴露私有构建数据（包括服
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
vercel next.js >= 13.4.0, < 15.5.24 -

II. Public POCs for CVE-2026-75604

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III. Intelligence Information for CVE-2026-75604

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Patches & Fixes for CVE-2026-75604 (2)

Vendor Advisories for CVE-2026-75604 (1)

Vendor Pages for CVE-2026-75604 (2)

IV. Related Vulnerabilities

Same product: next.js
Same vendor: vercel
Same weakness: CWE-22

V. Comments for CVE-2026-75604

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